<template>
    <div>
        <h1>当前求和为： {{sum}}</h1>
        <h3>当前求和放大10倍为：{{bigSum}}</h3>
        <h3>我在{{school}}，学习{{subject}}</h3>
        <h3 style="color: red;">Person组件的总人数是：{{personList.length}}</h3>
        <select v-model.number="n">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
        </select>
        <button @click="increment(n)">+</button>
        <button @click="decrement(n)">-</button>
        <button @click="incrementOdd(n)">当前求和为奇数再加</button>
        <button @click="incrementWait(n)">等一等在加</button>
   </div>
</template>

<script>
    import {mapState,mapGetters, mapMutations, mapActions} from 'vuex'
    export default {
        name: 'Count',
        data() {
            return {
                n:1, //用户选择的数字
            }
        },
        computed: {
            //借助mapState生成计算属性，从state中读取数据。（数组写法）
            ...mapState('countAbout',['sum','school','subject']),
            //借助mapGetters生成计算属性，从getters中读取数据。（数组写法） 
            ...mapState('personAbout',['personList']),
            ...mapGetters('countAbout',['bigSum'])

        },
        methods: {
            //借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(对象写法)
            ...mapMutations('countAbout',{increment:'JIA',decrement:'JIAN'}),
            //借助mapActions生成对应的方法，方法中会调用dispatch去联系actions(对象写法)
            ...mapActions('countAbout',{incrementOdd:'jiaOdd',incrementWait:'jiaWait'})
        },
        mounted() {
            // console.log(x);
            console.log(this.$store);
        }
    }
</script>

<style lang="css"> 
    button {
        margin-left: 5px;
    }
</style>